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Air Conditioning System (Diagnostic Codes & Circuit Tests): Other Lexus CT I

Automatic HVAC System ~3901 words

PROCEDURE

  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the front passenger side temperature adjustment switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pulse (P) Front passenger side air mix servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 6 (pulse) MAX. HOT: 93 (pulse) - Air Mix Servo Actual Pulse (P) Front passenger side air mix servo motor actual pulse / Min.: 0, Max.: 255 MAX. COLD: 6 (pulse) MAX. HOT: 93 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse (P) Air mix servo motor pulse (for front passenger side) Min.: 0, Max.: 255 - OK Air temperature changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT AIR MIX CONTROL SERVO MOTOR (FOR FRONT PASSENGER SIDE) Replace the air mix control servo motor (for front passenger side). Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1441/41 is output A DTC B1441/41 is not output B B --> END (AIR MIX CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1441/41 is output A DTC B1441/41 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568603-S01769296392013072300000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-568733-S07880864152013072300000)
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the R/F (Recirculation/Fresh) switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Inlet Damper Targ Pulse Air inlet servo motor target pulse / Min.: 0, Max.: 255 RECIRCULATION: 19 (pulse) FRESH: 7 (pulse) - Air Inlet Damper Actual Pulse Air inlet servo motor actual pulse / Min.: 0, Max.: 255 RECIRCULATION: 19 (pulse) FRESH: 7 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Inlet Damper Targ Pulse Air inlet damper target pulse Min.: 0, Max.: 255 - OK Recirculation damper position changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT AIR INLET CONTROL SERVO MOTOR Replace the air inlet control servo motor. Refer to «DISASSEMBLY»(ref-568733-S29088124342013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1442/42 is output A DTC B1442/42 is not output B B --> END (AIR INLET CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1442/42 is output A DTC B1442/42 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568603-S01769296392013072300000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-568733-S07880864152013072300000)
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the MODE switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Outlet Servo Pulse (D) Air outlet servo motor target pulse / Min.: 0, Max.: 255 FACE: 47 (pulse) B/L: 37 (pulse) FOOT: 18 or 23 (pulse) FOOT/DEF: 9 (pulse) DEF: 5 (pulse) - Air Outlet Servo Actu Pulse (D) Air outlet servo motor actual pulse / Min.: 0, Max.: 255 FACE: 47 (pulse) B/L: 37 (pulse) FOOT: 18 or 23 (pulse) FOOT/DEF: 9 (pulse) DEF: 5 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Rage Diagnostic Note Air Outlet Servo Pulse (D) Air outlet servo motor pulse Min.: 0, Max.: 255 - OK Air flow position changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT AIR OUTLET CONTROL SERVO MOTOR Replace the air outlet control servo motor. Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1443/43 is output A DTC B1443/43 is not output B B --> END (AIR OUTLET CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1443/43 is output A DTC B1443/43 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568603-S01769296392013072300000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-568733-S07880864152013072300000)
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the driver side temperature adjustment switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pulse (D) Driver side air mix servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 92 (pulse) MAX. HOT: 5 (pulse) - Air Mix Servo Actual Pulse (D) Driver side air mix servo motor actual pulse / Min.: 0, Max.: 255 MAX. COLD: 92 (pulse) MAX. HOT: 5 (pulse) - OK The display is as specified in the Normal Condition column. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C B --> See step 5 C --> See step 6 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse (D) Air mix servo motor pulse (D side) Min.: 0, Max.: 255 - OK Air temperature changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT AIR MIX CONTROL SERVO MOTOR (FOR DRIVER SIDE) Replace the air mix control servo motor (for driver side). Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1446/46 is output A DTC B1446/46 is not output B B --> END (AIR MIX CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1446/46 is output A DTC B1446/46 is not output B B --> END (AIR CONDITIONING HARNESS ASSEMBLY WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568603-S01769296392013072300000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-568733-S07880864152013072300000)
  1. CHECK CAN COMMUNICATION SYSTEM Using the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN DTC is not output A CAN DTC is output B B --> See step 3 A --> See step 2
  2. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-568733-S30410220172013072300000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568746-S19329885762013072300000)
  1. CHECK CAN COMMUNICATION SYSTEM Using the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN DTC is not output A CAN DTC is output B B --> See step 3 A --> See step 2
  2. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-568733-S30410220172013072300000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568746-S19329885762013072300000)
  1. CHECK CAN COMMUNICATION SYSTEM Using the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN DTC is not output A CAN DTC is output B B --> See step 7 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test. Check the operation by referring to the table below. ENGINE AND ECT Tester Display Test Part Control Range Diagnostic Note Control the Electric Cooling Fan Electric cooling fan OFF, ON - NG --> See step 4 OK: Go to next step
  3. CHECK REFRIGERANT PRESSURE Install a manifold gauge set. Refer to «ON-VEHICLE INSPECTION»(ref-568733-S20908219362013072300000) . Read the manifold gauge pressure when the following conditions are established. Prepare the vehicle according to the chart below. Item Condition Vehicle Doors All fully open Temperature Setting MAX COLD Blower Speed HI A/C switch ON R/F Switch RECIRCULATION (30 to 35°C (86 to 95°F)) Standard Pressure Low pressure side 150 to 250 kPa (1.5 to 2.5 kgf/cm 2 , 22 to 36 psi) High pressure side 1370 to 1570 kPa (14.0 to 16.0 kgf/cm 2 , 199 to 228 psi) NG --> See step 5 OK --> See step 6
  4. GO TO COOLING FAN SYSTEM. Refer to «Cooling Fan Circuit»(ref-568758-S10256696072013072300000)
  5. CHARGE REFRIGERANT. Refer to «REPLACEMENT»(ref-568733-S37903669672013072300000)
  6. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-568733-S30410220172013072300000)
  7. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568746-S19329885762013072300000)
  1. CHECK CAN COMMUNICATION SYSTEM Using the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN DTC is not output A CAN DTC is output B B --> See step 3 A --> See step 2
  2. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-568733-S30410220172013072300000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568746-S19329885762013072300000)
  1. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse (D) Air mix control servo motor pulse (for driver side) Min.: 0, Max.: 255 - Air Mix Servo Targ Pulse (P) Air mix control servo motor pulse (for passenger side) Min.: 0, Max.: 255 - Air Outlet Servo Pulse (D) Air outlet control servo motor pulse Min.: 0, Max.: 255 - Air Inlet Damper Targ Pulse Air inlet control servo motor pulse Min.: 0, Max.: 255 - OK Arm of the damper servo motor selected in the Active Test moves smoothly. According to the test result, proceed to the next step. Result Result Proceed to One of the damper servo motors is malfunctioning A All of the damper servo motors are malfunctioning B B --> See step 7 A: Go to next step
  2. SYSTEM CHECK According to the test result, proceed to the next step. Result Result Proceed to Only the air mix damper servo motor (for driver side) is malfunctioning A Only the air mix damper servo motor (for passenger side) is malfunctioning B Only the air inlet control servo motor is malfunctioning C Only the air outlet control servo motor is malfunctioning D B --> See step 4 C --> See step 5 OK --> See step 6 A: Go to next step
  3. REPLACE AIR MIX CONTROL SERVO MOTOR (FOR DRIVER SIDE) Replace the air mix control servo motor (for driver side). Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1497 is not output A DTC B1497 is output B B --> See step 7 A --> END
  4. REPLACE AIR MIX CONTROL SERVO MOTOR (FOR PASSENGER SIDE) Replace the air mix control servo motor (for passenger side). Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1497 is not output A DTC B1497 is output B B --> See step 7 A --> END
  5. REPLACE AIR INLET CONTROL SERVO MOTOR Replace the air inlet control servo motor (for driver side). Refer to «DISASSEMBLY»(ref-568733-S29088124342013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1497 is not output A DTC B1497 is output B B --> See step 7 A --> END
  6. REPLACE AIR OUTLET CONTROL SERVO MOTOR Replace the air outlet control servo motor (for driver side). Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1497 is not output A DTC B1497 is output B B --> See step 7 A --> END
  7. REPLACE AIR CONDITIONING HARNESS ASSEMBLY Replace the air conditioning harness assembly. Refer to «DISASSEMBLY»(ref-568733-S00569368712013072300000) . HINT: Since the air conditioning harness assembly cannot be inspected while it is removed from the vehicle, replace the air conditioning harness assembly with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1497 is not output A DTC B1497 is output B B --> See step 8 A --> END
  8. CHECK HARNESS AND CONNECTOR (POWER SOURCE) Disconnect the air conditioning amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H85-21 (B) - Body ground Power switch off 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
  9. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-568733-S07880864152013072300000)
  1. GO TO CAN COMMUNICATION SYSTEM HINT: Refer to CAN Communication System. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568746-S19329885762013072300000) . NEXT --> END
  1. CONFIRM MODEL Result Result Proceed to w/o Navigation System A w/ Navigation System B B --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the center cluster module circuit (air conditioning control assembly) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H80-1 (ACC) - Body ground Power switch off Below 1 V Power switch on (ACC) 11 to 14 V H80-2 (IG+) - Body ground Power switch off Below 1 V Power switch on (IG) 11 to 14 V H80-4 (+B) - Body ground Power switch off 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H80-16 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - CENTER CLUSTER MODULE CIRCUIT) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H80-11 (LIN1) - H85-37 (LIN1) Always Below 1 ohms H80-11 (LIN1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. REPLACE CENTER CLUSTER MODULE CIRCUIT (AIR CONDITIONING CONTROL PANEL ASSEMBLY) Replace the center cluster module circuit (air conditioning control assembly) with a new or a known good one. Refer to «REMOVAL»(ref-568733-S04793885602013072300000) . OK The center cluster module circuit (air conditioning control assembly) operation returns to normal. NG --> See step 9 OK --> END (CENTER CLUSTER MODULE CIRCUIT WAS DEFECTIVE)
  5. CHECK NAVIGATION SYSTEM Check that the navigation system operates normally. OK The navigation system operates normally. Result Result Proceed to OK A NG (w/ Navigation System (for HDD)) B NG (w/ Navigation System (for DVD)) C B --> See step 10 C --> See step 11 A: Go to next step
  6. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the center cluster module circuit (air conditioning control assembly) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H80-1 (ACC) - Body ground Power switch off Below 1 V Power switch on (ACC) 11 to 14 V H80-2 (IG+) - Body ground Power switch off Below 1 V Power switch on (IG) 11 to 14 V H80-4 (+B) - Body ground Power switch off 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H80-16 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - CENTER CLUSTER MODULE CIRCUIT) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H80-11 (LIN1) - H85-37 (LIN1) Always Below 1 ohms H80-11 (LIN1) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  8. REPLACE CENTER CLUSTER MODULE CIRCUIT (AIR CONDITIONING CONTROL ASSEMBLY) Replace the center cluster module circuit (air conditioning control assembly) with a new or a known good one. Refer to «REMOVAL»(ref-568733-S04793885602013072300000) . OK The center cluster module circuit (air conditioning control assembly) operation returns to normal. NG --> See step 9 OK --> END (CENTER CLUSTER MODULE CIRCUIT WAS DEFECTIVE)
  9. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568603-S01769296392013072300000)
  10. GO TO NAVIGATION SYSTEM (for HDD). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568802-S01936700572013072300000)
  11. GO TO NAVIGATION SYSTEM (for DVD). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568803-S28301647022013072300000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE) Disconnect the air conditioning amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H85-1 (IG+) - Body ground Power switch off Below 1 V H85-1 (IG+) - Body ground Power switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H85-14 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568603-S01769296392013072300000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE) Disconnect the H85 air conditioning amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition H85-21 (B) - Body ground Power switch off 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition H85-14 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568603-S01769296392013072300000)

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